Rail clamp



FIG. 1 is a front elevation view of a rail clamp showing our new design;

FIG. 2 is a back elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a side elevational view of the right side thereof;

FIG. 6 is a side elevational view of the left side thereof; and,

FIG. 7 is a perspective view taken generally from the front, top, right-hand side thereof.

High-quality electronic copies of the drawings are available in the U.S. Patent and Trademark Office's electronic record of this application. 

CLAIM The ornamental design for a rail clamp, as shown and described. 